traceroute output

Hi All,

Anyone know what the "!<10>" means in the output of this traceroute command?

xxx@xxx# run traceroute 194.168.8.100
traceroute to 194.168.8.100 (194.168.8.100), 30 hops max, 52 byte packets
1 * * *
2 * * *
3 10.20.30.1 (10.20.30.1) 0.678 ms 0.521 ms 0.511 ms
4 cache2.service.xxxx.net (194.168.8.100) 0.498 ms !<10> 1.027 ms !<10> 0.857 ms !<10>

TIA